]> T3 neuron The glutamate neurotransmitter was assessed by labelling cells with a vGlut[CNSIII]-GAL4 driver (FBti0129148) (Raghu and Borst, 2011). The GABA neurotransmitter was assessed by the intersection of the expression of the VGAT-GAL4 driver (FBtp0069181) and an antibody against GABA (Raghu et al., 2013). Pre- versus postsynaptic innervation judged by scoring of terminal morphology from figures in Fischbach and Dittrich (1989) as assessed by FlyBrain Neuron DB. T3 FlyBrain_NDB:10183 VFB:FBbt_00003730 T3 T neuron T3 fly_anatomy.ontology FBbt:00003730 T neuron with its soma posteriorly adjacent to the gap between the medulla and lobula plate and a cell body fiber that projects along the proximal surface of the medulla before branching in the second optic chiasm (Fischbach and Dittrich, 1989; Shinomiya et al., 2019). One branch forms a bushy, fine, terminal arborization in medulla layer M9 and the other forms a terminal arborization in lobula layers 2 and 3 with mix of bleb-type and fine terminal branches (Morante and Desplan, 2008; Fischbach and Dittrich, 1989). It seems to be capable of both glutamatergic and GABAergic neurotransmission. cell body rind of adult posterior lobula plate GABA-Glut neuron has soma location adult GABAergic neuron adult glutamatergic neuron receives synaptic input in region sends synaptic output to region optic lobe wide-field columnar neuron T neuron medulla layer M9 lobula layer 2 lobula layer 3